<template>
    <div>
        <!--面包屑导航区-->
        <el-breadcrumb separator-class="el-icon-arrow-right">
          <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
          <el-breadcrumb-item>商品管理</el-breadcrumb-item>
          <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区-->
        <el-card>
            <el-row :gutter="22">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
                      <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="goAddpage">添加商品</el-button>
                </el-col>
            </el-row>
            <!--table表格区-->
            <el-table :data="goodsList" border stripe>
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column label="商品名称" prop="goods_name"></el-table-column>
                <el-table-column label="商品价格(元)" prop="goods_price" width="110px"></el-table-column>
                <el-table-column label="商品数量" prop="goods_number" width="100px"></el-table-column>
                <el-table-column label="商品重量" prop="goods_weight" width="90px"></el-table-column>
                <el-table-column label="创建时间" prop="add_time" width="165px">
                    <template slot-scope="scope">
                        {{scope.row.add_time | dateFormat}}
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="200px">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini"
                                    @click="editById(scope.row.goods_id)">编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini"
                                   @click="removeById(scope.row.goods_id)">删除</el-button>
                    </template>
                </el-table-column>
            </el-table>
            <!--分页区域-->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[5, 10, 15, 20]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total" background>
            </el-pagination>
        </el-card>
        <!--编辑对话框区-->
        <el-dialog title="商品信息" :visible.sync="editDialogVisible" width="50%">
            <el-form :model="editGoodsForm" :rules="editGoodsRules" ref="editGoodsRef" label-width="100px">
                <el-form-item label="商品名称" prop="goods_name">
                  <el-input v-model="editGoodsForm.goods_name" disabled></el-input>
                </el-form-item>
                <el-form-item label="商品价格" prop="goods_price">
                  <el-input v-model.number="editGoodsForm.goods_price"></el-input>
                </el-form-item>
                <el-form-item label="商品数量" prop="goods_number">
                  <el-input v-model.number="editGoodsForm.goods_number"></el-input>
                </el-form-item>
                <el-form-item label="商品重量" prop="goods_weight">
                  <el-input v-model.number="editGoodsForm.goods_weight"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editGoodsInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
  data () {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表
      goodsList: [],
      // 总数据条数
      total: 0,
      // 控制编辑商品信息对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的商品信息对象
      editGoodsForm: {},
      // 编辑商品的验证规则对象
      editGoodsRules: {
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
          { type: 'number', message: '价格必须为数字值' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
          { type: 'number', message: '重量必须为数字值' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
          { type: 'number', message: '重量必须为数字值' }
        ]
      }
    }
  },
  created () {
    this.getGoodsList()
  },
  methods: {
    // 根据分页获取对应的商品列表数据
    async getGoodsList () {
      const { data: res } = await this.$http.get('goods',
        { params: this.queryInfo })
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败！！')
      }
      this.$message.success('获取商品列表成功！！')
      console.log(res.data)
      this.goodsList = res.data.goods
      this.total = res.data.total
    },
    // 当页号发生改变时，更改pagesize，重新请求
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 当页码发生改变时，更改pagesize，重新请求
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 根据id删除对应的参数或属性
    async removeById (id) {
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除！！')
      }
      const { data: res } = await this.$http.delete('goods/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败！！')
      }
      this.$message.success('删除成功！!')
      this.getGoodsList()
    },
    // 路由跳转到新页面
    goAddpage () {
      this.$router.push('/goods/add')
    },
    async editById (id) {
      // console.log(id)
      const { data: res } = await this.$http.get('goods/' + id)
      // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('查询商品失败！！')
      }
      this.editGoodsForm = res.data
      console.log(this.editGoodsForm)
      this.editDialogVisible = true
    },
    editGoodsInfo () {
      this.$refs.editGoodsRef.validate(async valid => {
        // console.log(valid)
        if (!valid) return
        // 发起请求
        const { data: res } = await this.$http.put('goods/' + this.editGoodsForm.goods_id, this.editGoodsForm)
        console.log(res)
        if (res.meta.status !== 200) {
          return this.$message.error('修改商品信息失败！！')
        }
        this.editDialogVisible = false
        this.getGoodsList()
        this.$message.success('修改商品信息成功！！')
      })
    }
  }
}
</script>

<style lang="less" scoped>

</style>
